Poster display device



FIG. 1 is an isometric view from the front and to one side of the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is a top plan view thereof.

The broken lines below the device depict a municipal sign post and form no part of the claimed design. It is understood that the supporting structure may also be a street sign, traffic sign, traffic light standard, street light standard, utility pole, transit signpost or any other municipal signpost structure. 

The Ornamental Design for a poster display device, as shown and described. 